The half-life of carbon-14 is 5,730 years. Suppose a fossil is found with 10 percent as much of its carbon-14 as compared to a living sample. How old is the fossil?
1904 years
38077 years
19039 years
3808 years

Answers

Answer 1

Answer:

It is 19039 years

Step-by-step explanation:

I took the test and double checked on my calculator.


Related Questions

3
Regina writes the expression y +9.
4
Which expression is equivalent to the one Regina
writes?
A (9.3 : 4) + y
B 9+ y(3:4)
C (y +9)(3-4)
D None of these

Answers

Answer:

a

Step-by-step explanation:

if you do it right it is a

the answer would be (9•3 divided by 4)+y which is A

Can someone help me please

Answers

Answer:

0.19 50% 15/20 9/10 95%

Step-by-step explanation:

I know

for a school fundraiser troy sold 28 bags of popcorn and 40 candy bars and made 282. jake sold 17 bags of popcorn and 20 candy bars and made 160.50. what was the cost of a bag of popcorn

Answers

Answer:

$6.50 per bag of popcorn

Step-by-step explanation:

let a bag of popcorn be represented by p and a candy bar be b

28p + 40b = $282

17p + 20b = $160.50

this is an example of simultaneous equations

so you have to double the second equation to give 34p + 40b = $321

subtract the equations to give one -- >  6p = $39

divide $39 by 6 to give the value of one bag of popcorn = $6.50

Someone please help me with this question

Answers

It would be in the order it is

Mike saves $2,000 at a yearly simple interest rate of 2%. He earns $280 in interest. For how many years did he save this money?

Answers

Answer:

7 years.

Step-by-step explanation:

To find this, we need to find 2% of 2,000. To do this, we mulitply 2,000 by .02. This gets us 40. Now, we need to divide 280 by 40 to find the amount of years it took for Mike to get this money. When we do that, it gets us 7. That means Mike saved that money for 7 years.

The number of years that he saves this money will be 7 years.

What is simple interest?

Simple interest is the concept that is used in many companies such as banking, finance, automobile, and so on.

The formula for interest is written as,

I = (PRT)/100

Where P is the principal, R is the rate of interest, and T is the time.

Mike saves $2,000 at a yearly simple interest rate of 2%. He earns $280 in interest. Then the number of years is calculated as,

$280 = ($2,000 x 2 x T) / 100

$28,000 = $4,000 x T

T = $28,000 / $4,000

T = 7 years

The number of years that he saves this money will be 7 years.

More about the simple interest link is given below.

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At one farmer’s market, bananas cost $0.80 per pound. At another farmer’s market, bananas are sold in 5-pound bags for $4.50 per bag. Which explains how to find the better buy?
Divide 4.50 by 5 to find the unit rate for the 5-pound bag, and compare that number to $0.80 per pound.
Divide 0.80 by 5 to find the unit rate for the 5-pound bag, and compare that number to $0.80 per pound.
Multiply 4.50 by 5 to find the cost for 5 pounds, and compare to $4.50 per bag.
Multiply 4.50 by 0.80 to find the cost for 5 pounds, and compare to $4.50 per bag.

Answers

Answer:

It's the first one

Step-by-step explanation:

To find the price per pound, you have to divide 4.50 by 5, which you then compare to $0.80

Answer:

its a in edg

Step-by-step explanation:

just took the test peace out home fry

Please answer 5 x (1/25)

Answers

Answer:

5/25 or simplified 1/5

Step-by-step explanation:

Answer:0.2

Step-by-step explanation:

A $40,000 car depreciates in value about 18% per year for the life of the car. Determine the value of the car after 7,8, and 9 years. What is the rate of decay?

Answers

Answer:

Value after:

7 years = $9971.42

8 years = $8176.56

9 years = $6704.78

Rate of decay = 18%

Step-by-step explanation:

A $40,000 car depreciates in value about 18% per year for the life of the car.

Determine the value of the car after 7,8, and 9 years. What is the rate of decay?

The formula for Depreciation is

FV = PV( 1 - r)^t

Where

FV = Future value

PV = Present value = $40,000

r = Depreciation rate = 18% = 0.18

t = time in years

a) After 7 years

$40,000 (1 - 0.18)⁷

= $9971.4188227

= $9971.42

b) After 8 years

$40,000 (1 - 0.18)⁸

= $8176.5634346

= $8176.56

c) After 9 years

$40,000 (1 - 0.18)⁹

= $6704.7820164

≈ $6704.78

= $9971.42

The Rate of decay = 18%

Find the product.
(1.2) x (0.11)

Answers

Answer:

0.132

Step-by-step explanation:

1.2 * 0.11 = 0.132

Answer:

.132

Step-by-step explanation:

So take away the decimal on both for a second and then multiply then on the answer move the decimal over 3 times there is your answer

Quantity of Notebooks Cost
5/$6.00
6/$5.82
7/$6.44
8/$6.80
9/$8.01
The table shows the cost for different quantities of notebooks offered online. Which is the BEST VALUE?
A) 5 notebooks
B) 6 notebooks
C) 7 notebooks
D) 8 notebooks

Answers

i think it’s A, each notebook would be .83 cents

Answer: I think it might be A but then again I am only in 6th grade so, whatever!

Step-by-step explanation:

How would you use distrubutive property for the eqaution 3(x+y)
ANSWER FAST PLSSSSS WORTH 50 BRAINLY POINTS

Answers

Answer:

3(x+y)

=3x+3y

Here he have to multiply 3 with x and y.

Answer:

please mark me brainliest and follow me my friend.

Dale buys candy that costs $8 per pound. He will buy at least 7 pounds of candy. What are the possible amounts he will spend
on candy?
Use c for the amount (in dollars) Dale will spend on candy,
Write your answer as an inequality solved for c.

Answers

Answer:

66

Step-by-step explanation:

Riko wants to find the distance between the points (−2, −3) and (2, −5). His work is shown. StartAbsoluteValue negative 3 EndAbsoluteValue + StartAbsoluteValue negative 5 EndAbsoluteValue = 3 + 5 = 8. The distance is 8 units. Riko correct? Explain why or why not.

Answers

Answer:

Riko is wrong because she uses the wrong formula.

Step-by-step explanation:

Given the coordinate points (-2, -3) and (2, -5)

We are to find the distance between the two points

Using the formula:

D = √(x2-x1)²+(y2-y1)²

From the coordinates x1 = -2, y1 = -3, x2 = 2 and y2 = -5

Substitute

D = √(2-(-2))²+(-5-(-3))²

D= √(4)²+(-2)²

D = √16 + 4

D = √20

D = √4*√5

D = 2√5

This shows that Riko is wrong because she uses the wrong formula.

Answer:

No, Riko is not correct. The points do not have the same x-coordinates. If you connect the points, they do not form a horizontal or vertical line, so you cannot count spaces or use absolute value to find the distance.

Step-by-step explanation:

Select the correct
inswer
Which term is a term in this expression?
-3x - 7(x + 4)
A.-3
B. 3x
C.-7
D. X+4

Answers

just plug it in and check— trust me, best trick in the book. for this one, there’s no need.

what is a term? it’s when the variable is on a constant— 3x

maria pays 15.20 for 5.3 pounds of candy what is the price per pound of candy

Answers

Answer:

$2.90 per pound

Step-by-step explanation:

You must divide the total from the amount bought.

15.20/5.3 = 2.8679245283

Next, you round the number by the first 2 decimals.

2.86 = 2.90 - The answer

Check if you need to make sure the answer is correct

The library has 65400 art books and 9600 science books. What part of all the books are science books

Answers

Answer:

9,600/75,000, 16/125

Step-by-step explanation:

art+science=75000

9600

75000    =16/125

The part of all the books that are science books is 0.128 or 16/125.

Using this formula

Science books=Science books(Art books+Science books)

Where:

Science books=9600

Art books=65400

Let plug in the formula

Science books=9600/(65400+9600)

Science books=9600/75000

Science books=0.128 or 16/125

Inconclusion the part of all the books that are science books is 0.128 or 16/125.

Learn more about part of books that are science here:https://brainly.com/question/8513862


A watch was on sale for 70% off. The sale price is $60. What was the original price?

Answers

Answer:

78 dollars

Step-by-step explanation:

-2x - 2y =-10 and 9x + 7y = 49

Answers

Answer:

I think it is 49

Step-by-step explanation:

Hope this helped have an amazing day/month/year!

Which ratio does NOT represent this situation?
1 point
o
3:12
9:3
8:2
1:3

Answers

Answer:

1:3

Step-by-step explanation:

3:12 is the amount of shaded circles to all circles, 8:2 is basically the same thing as 3:12 and 9:3 is the amount of shaded circles to the amount of non-shaded circles.  1:3 wouldn't work because it is not the right ratio.

Translate each phrase into an algebraic inequality:
Fiona works part time for a legal firm. She can work a maximum of 30 hours
per week.

Answers

Let hours = x

She can work a maximum of 30 hours so x can be any number from 30 or below.

The inequality would be: X <= 30

Answer:

Let the maximum time be x

She can work 30 hrs or below ( maximum of 30 hrs)

Therefore, the equation is

[tex] \huge \boxed{x \leqslant 30 \: hours}[/tex]

if 72 is 40% what is 100%?

Answers

Answer:

180

Step-by-step explanation:

If 40% = 72, 100% can be found like so:

40% = 72

100% =  [tex]\frac{100}{1}[/tex] * [tex]\frac{72}{40}[/tex]

You can reduce 40 and 100 by 20 (or probably more, but I'll use 20)

So now we have:

[tex]\frac{50}{1}[/tex] * [tex]\frac{72}{20}[/tex] = [tex]\frac{3600}{20}[/tex]

Divide, and you get 180.

To check, we can find 40% of 180.

(I looked it up)

Hope this helps!

can you. pls. solve for X?​

Answers

Answer:

x = 173

Step-by-step explanation:

Answer:

-7

Step-by-step explanation:

90+30=120

180-120=60

x+67=60

x=-7

what is the soulution to the equation 13 3/4+x=7 1/4​

Answers

Step-by-step explanation:

[tex]13 \frac{3}{4 } + x = 7 \frac{1}{4} [/tex]

[tex] \frac{55}{4} + x = \frac{29}{4} [/tex]

[tex]x = \frac{29}{4} - \frac{55}{4} [/tex]

[tex]x = - \frac{13}{2} [/tex]

solve equation
x^2+6x+1=0
give your answer to 2 decimal places

Answers

Step-by-step explanation:

x² + 6x + 1 = 0

(x + 3)² - 8 = 0

(x + 3)² = 8

x + 3 = √8 or x + 3 = -√8

x = √8 - 3 or x = -√8 - 3

x = -0.17 or x = -5.83.

The solution of the given quadratic equation x² + 6x + 1 = 0 will be x = -0.17 or x = -5.83.

What is a quadratic equation?

An algebraic equation of the second degree in x is a quadratic equation. The quadratic equation is written as ax2 + bx + c = 0, where x is the variable, and a must not be zero.

For example, 3x² + 6x + 8 = 0 here x has the highest term as 2 and the coefficient of x² is not zero.

As per the given quadratic equation,

x² + 6x + 1 = 0

Make the whole square as

(x + 3)² - 8 = 0

(x + 3)² = 8

x + 3 = √8 or x + 3 = -√8

x = √8 - 3 or x = -√8 - 3

x = -0.17 or x = -5.83.

Hence "The solution of the given quadratic equation x² + 6x + 1 = 0 will be x = -0.17 or x = -5.83".

For more about the quadratic equation,

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I don’t rlly need the answer I just would like the method please
3x-7=17-5x

Answers

Answer: x=3

Step-by-step explanation:

3x-7=17-5x

-7=17-8x (subtract both sides by 3x)

-24=-8x (subtract both sides by 17)

3=x (divide both sides by -24)

solve for x it is a parallelogram
pls help

Answers

Answer:

x = 5

Step-by-step explanation:

I hope that this answer will help you

Answer:

[tex]3x + 2 = 17 \\ 3x = 15 \\ \boxed{x = 5}[/tex]

5 is the right answer.

I really need help please!

Answers

...............................
12 of them said that they prefer Coca Cola but the pupils all together said that they prefer milk on it.

Match the equation with the graph.

Graph E
Graph F
Graph G
Graph H

Answers

Answer:

Graph E: Y= -1/3x +3

Grpah F: Y= 1/2x

Graph G: Y= x-3

Graph H: Y= -x

Step-by-step explanation:

In a certain​ chemical, the ratio of zinc to copper is 4 to 19. A jar of the chemical contains of copper. How many grams of zinc does it​ contain?

Answers

Answer:

4 grams of zinc

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

Read the excerpt from Heart of a Samurai.
Each of them was also given a metal stick, with four prongs on one end.

“Fork,” the sailor said – and showed them they should use it to eat the rice.

The fishermen recited their prayer before eating. “Itadakimasu – I will humbly receive.”

Then Goemon said, “It might be poison.”
What can readers infer based on details in the excerpt?
A. Goemon likes new experiences.
B. Goemon is not afraid of his rescuers.
C. Goemon does not trust his rescuers.
D. Goemon has used a fork before.

Answers

The correct answer is b

Answer:

c. goemon does not trust his rescuers.

Step-by-step explanation:

goemon said it might be poison.

he was cautious about eating the food.

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